Question

下面请找我的选择。此选择的结果如下：

fecha1          columna_1       columna_2
09.07.2014     10.00000000     3.00000000
10.07.2014     12.20000000     5.06000000
11.07.2014     15.56600000     9.26240000
12.07.2014     20.18864000     27.35320192
15.07.2014     28.60184480     22.85988716

我的问题是：我想在下面的选择结果中添加一个额外的行。该行应包括：

fecha1 =“fecha1”栏中显示的第一天前一天

columna_1 = 0

columna_2 = 0

我可以这样做吗？

这是实际选择：

DECLARE @sales TABLE
(codigo VARCHAR(10) NOT NULL,
fecha DATE NOT NULL,
diferencia NUMERIC(10, 2) NOT NULL);

INSERT INTO @sales(codigo, fecha, diferencia)
VALUES ('q', '20140708', 51),
('q', '20140712', 0.03), 
('q', '20140712', 0.033), 
('q', '20140712', 0.04), 
('q', '20140811', 0.03), 
('q', '20140812', 0.01),
('q', '20140815', 0.05),
('q', '20140815', 0.06),
('q', '20140815', 0.02),
('q', '20140114', 0.07),
('q', '20140714', 0.024),
('q', '20140714', 0.024),
('x', '20140709', 0.025),
('x', '20140710', 0.016),
('x', '20140711', 0.036),
('x', '20140712', 0.023),
('x', '20140712', 0.035),
('x', '20140715', 0.057),
('c', '20140709', 0.097),
('c', '20140710', 0.0197),
('c', '20140711', 0.0297),
('c', '20140712', 0.0397),
('c', '20140715', 0.071);


;with ctesource as 
(
    select
        codigo,diferencia,
        fecha,
        sum( log( 1e0 + diferencia ) ) over ( partition by codigo order by fecha rows unbounded preceding) as LogAssetValue
    from
        @sales
        WHERE codigo IN ( 'c', 'x') and fecha > DATEADD(month, -24, getdate())
)
select convert(varchar, fecha, 104) AS fecha1,  
 CAST(SUM(Case codigo when 'c' then (exp(LogAssetValue)-1)*100 ELSE 0 END) AS numeric(16, 8)) as columna_1,
 CAST(SUM(Case codigo when 'x' then (exp(LogAssetValue)-1)*100 ELSE 0 END) AS numeric(16, 8)) as columna_2
from ctesource 
GROUP BY fecha
order by fecha;

非常感谢!!!!!!

Answer 1

在SQL Server中使用varchar 总是包含长度。实现目标的一种方法是使用union all：

(select convert(varchar(255), fecha, 104) AS fecha1,  
        CAST(SUM(Case codigo when 'c' then (exp(LogAssetValue)-1)*100 ELSE 0 END) AS numeric(16, 8)) as columna_1,
        CAST(SUM(Case codigo when 'x' then (exp(LogAssetValue)-1)*100 ELSE 0 END) AS numeric(16, 8)) as columna_2
 from ctesource 
 GROUP BY fecha
) union all
(select convert(varchar(255), dateadd(-1, day, min(fecha)), 104),
        0, 0
 from ctesource
)
order by fecha1;

向具有CTE结果的选择添加额外行

1 个答案: